Crucible Steel XM-19 Stainless Steel

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Crucible Steel XM-19 Stainless Steel
Categories:	Metal; Ferrous Metal; Stainless Steel; T 300 Series Stainless Steel
Material Notes:	Crucible XM-19 Stainless is a nitrogen strengthened, low carbon, austenitic, stainless steel that provides good corrosion resistance in combination with high strength. The alloy has better corrosion resistance than Type 316 with approximately twice the yield strength. It can be welded, machined and cold worked using the same equipment and methods used for the conventional 300 series stainless steels. It is nonmagnetic as annealed and after severe cold work. Mechanical properties reported for annealed one inch round bar. Information provided by Crucible Industries
Key Words:	UNS S20910
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Physical Properties	Original Value	Comments

Density	7.889 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	96
Tensile Strength, Ultimate	350 MPa @Temperature 816 °C
	600 MPa @Temperature 593 °C
	750 MPa @Temperature 260 °C
	827 MPa @Temperature 21.1 °C
Tensile Strength, Yield	240 MPa @Temperature 816 °C
	300 MPa @Temperature 538 °C
	340 MPa @Temperature 260 °C
	448 MPa @Temperature 21.1 °C	0.2%
Elongation at Break	32 % @Temperature 427 °C	in 2"
	35 % @Temperature 204 °C	in 2"
	36 % @Temperature 649 °C	in 2"
	40 % @Temperature 816 °C	in 2"
	45 % @Temperature 21.1 °C	in 2"
Reduction of Area	65 % @Temperature 21.1 °C
	65 % @Temperature 260 °C
	65 % @Temperature 538 °C
	70 % @Temperature 816 °C
Charpy Impact	160 ft-lb	V-Notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	493 ohm-cir-mil/ft
Magnetic Permeability	1.004 @Magnetic Field 0.0200 T

Thermal Properties	Original Value	Comments
CTE, linear	16.2 µm/m-°C @Temperature 21.0 - 93.0 °C
	17.8 µm/m-°C @Temperature 21.0 - 427 °C
	20.0 µm/m-°C @Temperature 21.0 - 871 °C
Thermal Conductivity	15.6 W/m-K @Temperature 149 °C
	20.3 W/m-K @Temperature 482 °C
	25.2 W/m-K @Temperature 816 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.030 %
Chromium, Cr	20.5 - 23.5 %
Iron, Fe	>= 48.9 %	as balance
Manganese, Mn	4.0 - 6.0 %
Molybdenum, Mo	1.5 - 3.0 %
Nickel, Ni	11.5 - 13.5 %
Niobium, Nb (Columbium, Cb)	0.10 - 0.30 %
Nitrogen, N	0.20 - 0.40 %
Phosphorus, P	<= 0.040 %
Silicon, Si	<= 1.0 %
Sulfur, S	<= 0.030 %
Vanadium, V	0.10 - 0.30 %

Descriptive Properties
Corrosion Rate	0.1 mils/year	50% Acetic Acid (Boiling)
	0.2 mils/year	5% H₂SO₄(176°F)
	0.3 mils/year	20% HNO₃(200°F)
	15 mils/year	10% H₂SO₄(176°F)
	2.3 mils/year	10% Formic Acid (Boiling)

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NCRUC907 / 160358

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